At Notion's headquarters, the most revealing detail is a piece of flooring. Not the library, the timber furniture or the Craftsman vocabulary chosen by Interior Architects.

When interiors left by former tenants came out, Columbia marble floors reappeared beneath the linoleum.1 The new office plan did not line up perfectly with their boundaries. IA could have found a similar stone, extended the pattern and erased the difference.

IA chose to make the mismatch legible: the missing area was filled with wood.1

The patch stays visible. Old and new stop pretending they were designed together.

That is a more useful project rule than the overall style.

The brief moved

At first, Notion asked for a “clean and light” workplace with little traditional detailing.1 Then the project started stripping away layers left by earlier occupants, including Uber.

Under those layers were materials and components the original brief had not fully accounted for: marble, timber sliding-sash windows, an interior bronze stair, old bar tops stored in the basement and several Prohibition-era objects.1

The building itself is old. The Monadnock Building at 685 Market Street dates from 1907 and has ten floors.3 Its management portal describes it as a historic Beaux-Arts office building; when Brookfield acquired it in 2013, the company noted that a full restoration and renovation had already taken place in the late 1980s.34

IA was not entering an untouched 1907 shell. The project had to work with a building already edited several times.

The sequence matters more than the stylistic label. Craftsman is not an atmosphere chosen first and imposed on the building. It becomes an intermediate language selected after the older layers appeared.

Do not fake the old

Interior Architects describes a restrained Craftsman vocabulary: square edges, simple detailing and stained cherry across wainscoting, some ceiling elements and the stair to the private cafe.1

The project could have gone in a much more literal direction: reproduce old mouldings, build a fake 1907 interior, or move the other way and neutralize everything behind uniform contemporary surfaces.

The project takes a third route.

Historic components keep their own material identity. New components keep theirs. They are coordinated, but they are not disguised.

The marble-to-wood patch condenses that logic into something another project might simply classify as a defect to fix.

Diagram of an old marble floor interrupted by a timber strip where the new plan meets itAt Notion, IA uses wood where the new plan no longer matches the existing marble floor. IRZ synthesis from Interior Architects / Dezeen

Many renovations try to make this kind of mismatch disappear. Here, the mismatch records a fact: the plan changed.

Reuse without a museum

The same principle shows up elsewhere in the headquarters.

Bar tops found in basement storage became standing bar rails.1 Prohibition-era objects were preserved and displayed. A section of an original blueprint was framed. A fire-rated window was positioned to create a view toward the historic interior bronze stair.1

None of those moves tries to reconstruct a hypothetical original state.

Instead, the existing building becomes a stock of constraints, parts and stories.

That distinction matters for reuse. Reusing an object does not require preserving its original function. An old countertop can become a rail. A window can be used to manufacture a view. An old drawing can become a document rather than an instruction to reproduce the past.

The renovation begins to look like editing: keep, move, frame, add.

The office still has to work

Preservation was not the only goal. Notion uses its San Francisco office as an active workplace and currently expects teams to be together in person three days a week.2

In the project reported by Dezeen, five floors contain work areas, lounges, a training room, library and private cafe.1 Curtains can temporarily close some zones, while the layout emphasizes common spaces rather than piling up individual amenities.1

That operational requirement keeps the project from turning into a pure conservation exercise.

The project gets interesting because it must preserve traces while still producing a workplace that functions now. It keeps traces while building a contemporary workplace flexible enough for a company that still gathers in person several days each week.2

The seam as method

For a smaller project, the marble patch is easier to reuse as a lesson than the entire Craftsman palette.

Whenever a new assembly meets something old, three options appear repeatedly: replace it, imitate it or show the joint.

Showing the joint is still the option designers seem least comfortable with.

It can preserve more existing material without demanding a perfect copy. It also avoids pretending that components from different periods belong to the same construction system.

The idea travels beyond flooring: repaired furniture, a patched facade, a modified machine or any object whose original spare part no longer exists.

A good patch does not always need to disappear.

Sometimes the patch exists precisely to show what changed.